4) Kevin Owens
Kevin Owens, who reigned as the universal champion for a whopping period of 188 days, would try his hand once again in the upcoming edition of the Royal Rumble. For the unversed, Owens remained as the champion from August 2016 to March 2017, much to the surprise of his fans.
Although one has to agree that his records in the contest have not been the best of all, given his recent accomplishments and form, Owens might be one of the leading WWE contenders to clinch the title and might as well come as someone whom Roman Reigns might be cautious of.